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    <title>ShellCheck: SC2008 – `echo` doesn't read from stdin, are you sure you should be piping to it?</title>
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    <h1>SC2008 – ShellCheck Wiki</h1>
    <a href="https://github.com/koalaman/shellcheck/wiki/SC2008">See this page on GitHub</a>
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    <h2
id="echo-doesnt-read-from-stdin-are-you-sure-you-should-be-piping-to-it"><code>echo</code>
doesn't read from stdin, are you sure you should be piping to it?</h2>
<h3 id="problematic-code">Problematic code:</h3>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="SC2008.html#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">find</span> . <span class="kw">|</span> <span class="bu">echo</span></span></code></pre></div>
<h3 id="correct-code">Correct code:</h3>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="SC2008.html#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="fu">find</span> .</span></code></pre></div>
<h3 id="rationale">Rationale:</h3>
<p>You are piping command output to <code>echo</code>, but
<code>echo</code> ignores all piped input.</p>
<p>In particular, <code>echo</code> is not responsible for putting
output on screen. Commands already output data, and with no further
actions that will end up on screen.</p>
<h3 id="exceptions">Exceptions:</h3>
<p>None.</p>
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    <p style='font-size: 80%'><a href="../index.html">ShellCheck</a> is a static analysis tool for shell scripts. This page is part of its documentation.</p>
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